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Electrode assembly and secondary battery including the same

An electrode assembly and electrode technology, which is used in secondary batteries, secondary battery manufacturing, and secondary battery repair/maintenance, etc., can solve problems such as temperature rise of electrode assemblies, and achieve the effect of improving heat dissipation performance and improving stability.

Pending Publication Date: 2022-05-27
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the above secondary battery, when a short circuit occurs when the first electrode and the second electrode are in contact with each other, the temperature of the electrode assembly may increase

Method used

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  • Electrode assembly and secondary battery including the same
  • Electrode assembly and secondary battery including the same
  • Electrode assembly and secondary battery including the same

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Embodiment Construction

[0041] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in a manner in which those skilled in the art to which the present invention pertains can easily implement the technical idea of ​​the present invention. The present invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, for the sake of clarity, anything unnecessary for describing the present invention will be omitted, and like reference numerals in the drawings refer to like elements.

[0042] [Electrode assembly according to the first embodiment of the present invention]

[0043] like Figure 1 to Figure 6As shown, the electrode assembly 100 according to the first embodiment of the present invention has a structure in which the first electrode and the second electrode are wound in a jelly roll shape between the first electrode and the second electrode The...

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Abstract

The present invention relates to an electrode assembly in which a first electrode and a second electrode are wound into a frozen roll shape with a separator interposed therebetween, the electrode assembly comprising: the first electrode; and a first winding unit including a first winding start portion provided at a winding start point and having no first electrode active material, a first winding end portion provided at the winding end point and having no first electrode active material; and a first coating portion provided between the first winding start portion and the first winding end portion and coated with the first electrode active material; a second electrode, and a second winding unit including a second winding start portion provided at the winding start point and having no second electrode active material, a second winding end portion provided at the winding end point and having no second electrode active material; and a second coating portion provided between the second winding start portion and the second winding end portion and coated with the second electrode active material; an electrode sheet portion including a first electrode sheet provided at a first winding end portion of the first electrode and a second electrode sheet provided at a winding start portion of the second electrode; and a first protective member attached to a surface of the second winding end portion of the second electrode facing the first electrode sheet.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims the benefit of priority from Korean Patent Application No. 10-2019-0142204 filed on Nov. 08, 2019, which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to an electrode assembly having heat dissipation properties and a secondary battery including the same. Background technique [0004] Generally, a secondary battery refers to a rechargeable and dischargeable battery unlike a non-rechargeable primary battery. Secondary batteries are widely used in high-tech electronics such as mobile phones, notebook computers, and camcorders. [0005] Secondary batteries are classified into can-type secondary batteries in which electrode assemblies are embedded in metal cans and pouch-type secondary batteries in which electrode assemblies are embedded in bags. The can type secondary battery includes an electrode assembly, a can accommodating the electr...

Claims

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Application Information

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IPC IPC(8): H01M50/586H01M50/59H01M10/04H01M10/42H01M10/613H01M10/654H01M50/531
CPCH01M50/586H01M50/59H01M10/0431H01M10/654H01M10/613H01M10/4235H01M50/531Y02E60/10Y02P70/50H01M50/595H01M10/0587H01M2200/00H01M50/572H01M50/538
Inventor 闵丞晙金正镇
Owner LG ENERGY SOLUTION LTD
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